My ringtone of Redmi2 is ringing only 2 times & then becoming silent.

[AC Question]

even though caller is online and waiting for lifting. How to adjust this in phone.

 

[Rukbat]

And if you answer the phone, you don't get the caller? Contact your carrier. (If you do, your ringtone could be the tone playing twice, then a few minutes of silence - it's just an audio file.)